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[SR-3190] Misleading error message: cannot subscript a value of type 'inout [PathPoint]' with optional field #45778

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swift-ci opened this issue Nov 12, 2016 · 1 comment
Open

[SR-3190] Misleading error message: cannot subscript a value of type 'inout [PathPoint]' with optional field #45778

swift-ci opened this issue Nov 12, 2016 · 1 comment
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compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation improvement type checker Area → compiler: Semantic analysis

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Previous ID SR-3190
Radar None
Original Reporter rmann (JIRA User)
Type Improvement

Attachment: Download

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Improvement, DiagnosticsQoI, TypeChecker
Assignee None
Priority Medium

md5: 1e7073afd5cd3139cc5bda61b452b44c

Issue Description:

The attached playground has the following code, and gets this error on the last line. The real problem is that anchorPt is Optional. This is in Xcode 8.1.
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Comment by Rick M (JIRA)

@belkadan commented on the mailing list:

The error seems to be a little better in master:

<stdin>:20:11: error: cannot convert value of type 'CGPoint?' to expected argument type 'inout CGPoint'
points[0].anchorPt += dv
~~~~~~~~~~^~~~~~~~

but that's still not great.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation improvement type checker Area → compiler: Semantic analysis
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